has had backing in the past from the koch brothers, who are known for being really patons of conservative causes, they were really a huge force in this election. . >> woodruff: and as you were pointing out, eliza newlin carney, for many of them, that money didn't pay off. i mean, many of those-- the candidates they were backing from mitt romney on, didn't make it. >> yeah. in fact, the success on the part of americans crossroads was less than 2%. it was a little bit better for crossroads g.p.s., 14% purpose there were groups, including those backing house runners that had a much higher rate of return, in the 60% range. what you saw this time around were the really big winners were the liberal groups-- planned parenthood. 98% success rate. now of course that's because most of their money went for obama, i believe. service employees international union, around an 80% return on its investment. afscme, same thing.